Uncovering The Truth About Modern Cordless Speakers
Wireless loudspeaker suppliers often show the frequency response of their solutions which, sadly, does not always show you a great deal about the sound quality. I will describe the meaning of this term and also offer some recommendations on how to interpret it whilst searching for a set of wireless loudspeakers.
A set of cordless speakers are only able to work inside of a particular frequency range. Any signals outside of this range will be removed. Because of this the frequency response provides an important clue concerning whether or not a particular set of cordless loudspeakers might be well suited for a particular use. This range is specified by listing 2 frequencies: a lower and also upper frequency. For instance, the lower frequency could be 20 Hz and the higher frequency 20 kHz. From this specification it seems like the wireless loudspeakers would be able to operate as a set of HIFI speakers. It may seem the larger the frequency response the better the wireless speakers. That, however, will not necessarily be. You need to consider the specifications far more carefully to be able to properly interpret them.
However, the frequency response sometimes is used in order to deceive shoppers by means of stretching out the frequency range a good deal beyond the range where the cordless loudspeakers still operate properly and in addition conceals the reality that the cordless loudspeakers aren't linear. A full frequency response graph, on the other hand, will show if there are any kind of peaks and valleys and in addition show how the frequency response is to be interpreted. Peaks as well as valleys might cause colorization of the sound. Preferably the sound pressure level of the cordless loudspeakers ought to be linear through the entire operating range.
In order to better comprehend the frequency response behavior of a certain type, you should try to find out under which conditions the response was calculated. You'll find this info in the data sheet of the wireless speakers. Then again, a lot of makers won't show these in which case you should make contact with the maker directly. One condition that might impact the frequency response is the impedance of the loudspeaker driver built into the wireless loudspeakers. Normal loudspeaker driver impedances vary from 2 to 16 Ohms. The lower the loudspeaker driver impedance the greater the load for the internal amplifier.
This change is most detectable with many cordless speakers that use digital amps, also referred to as Class-D amps. Class-D amps have a lowpass filter in their output as a way to reduce the switching components that are created through the internal power FETs. The lowpass filter characteristic, however, greatly varies according to the connected speaker load.
Various amplifiers incorporate feedback in order to compensate for changes in gain due to different connected loads. Other amplifiers utilize transformers and offer outputs for different loudspeaker loads. Apart from improving upon the frequency response of the amplifier, this approach usually additionally enhances the amplifier efficiency.
A set of cordless speakers are only able to work inside of a particular frequency range. Any signals outside of this range will be removed. Because of this the frequency response provides an important clue concerning whether or not a particular set of cordless loudspeakers might be well suited for a particular use. This range is specified by listing 2 frequencies: a lower and also upper frequency. For instance, the lower frequency could be 20 Hz and the higher frequency 20 kHz. From this specification it seems like the wireless loudspeakers would be able to operate as a set of HIFI speakers. It may seem the larger the frequency response the better the wireless speakers. That, however, will not necessarily be. You need to consider the specifications far more carefully to be able to properly interpret them.
However, the frequency response sometimes is used in order to deceive shoppers by means of stretching out the frequency range a good deal beyond the range where the cordless loudspeakers still operate properly and in addition conceals the reality that the cordless loudspeakers aren't linear. A full frequency response graph, on the other hand, will show if there are any kind of peaks and valleys and in addition show how the frequency response is to be interpreted. Peaks as well as valleys might cause colorization of the sound. Preferably the sound pressure level of the cordless loudspeakers ought to be linear through the entire operating range.
In order to better comprehend the frequency response behavior of a certain type, you should try to find out under which conditions the response was calculated. You'll find this info in the data sheet of the wireless speakers. Then again, a lot of makers won't show these in which case you should make contact with the maker directly. One condition that might impact the frequency response is the impedance of the loudspeaker driver built into the wireless loudspeakers. Normal loudspeaker driver impedances vary from 2 to 16 Ohms. The lower the loudspeaker driver impedance the greater the load for the internal amplifier.
This change is most detectable with many cordless speakers that use digital amps, also referred to as Class-D amps. Class-D amps have a lowpass filter in their output as a way to reduce the switching components that are created through the internal power FETs. The lowpass filter characteristic, however, greatly varies according to the connected speaker load.
Various amplifiers incorporate feedback in order to compensate for changes in gain due to different connected loads. Other amplifiers utilize transformers and offer outputs for different loudspeaker loads. Apart from improving upon the frequency response of the amplifier, this approach usually additionally enhances the amplifier efficiency.
You are receiving this because you signed up for it on 2011-10-03 from IP 203.109.66.181
To fine-tune your selection of which articles to receive, just login here
using your username:
To unsubscribe please use the following link:
Unsubscribe
No comments:
Post a Comment